CN212119425U - High-efficient coalescence defogging device - Google Patents

Abstract

The utility model provides a high-efficiency coalescence demisting device which is connected with a gas phase outlet of a gas-liquid separator and comprises a drainage chamber, a liquid drop coalescence element, a separation element, a downcomer and a liquid phase collecting tank; the drainage chamber is arranged at a gas phase outlet of the gas-liquid separator and comprises a drainage chamber main body and an inclined guide plate, wherein the drainage chamber main body is formed by a device cylinder, a front end plate, a rear end plate and a bottom plate in a surrounding mode, and the inclined guide plate is arranged on the front end plate in the drainage chamber main body; the droplet coalescence element, the separation element arrangement and the support device are arranged outside the front end plate of the drainage chamber; the separating element is a baffle plate blade; the liquid drop coalescence element and the separation element are vertically arranged, the lower part of the separation element is provided with a support plate with a plurality of rows of small holes, and the liquid phase collecting tank is arranged below the small holes; the downcomer means is located below the middle of the drainage chamber floor and at the bottom of the liquid phase collection trough. The device ensures that small liquid drops in the gas form large liquid drops through collision, and then the large liquid drops are separated, so that the demisting effect is good; the drainage chamber plays the effect of buffering and subsiding, and the slant guide plate flows out the gas outlet after carrying out the water conservancy diversion to gas, has optimized the separation effect.

Description

High-efficient coalescence defogging device

Technical Field

The utility model belongs to the technical field of at high-efficient gas-liquid separation, an efficient coalescence defogging device that trades such as concretely relates to petrochemical, electric power, metallurgy, environmental protection used.

Background

In the field of actual gas-liquid separation, not only is the separation efficiency of the separator improved, but also the liquid content in the gas is ensured to meet the index requirements. Because the pressure and air velocity fluctuation in the separator is large, the particle size of liquid drops carried in the air flow is small, and the like, a high-efficiency demister needs to be installed at the air outlet of the equipment. The demister for the separator is roughly composed of a wire-mesh demister, a vane-type demister, a baffle-type demister, a swirl plate-type demister, and the like.

However, in these structures, the wire mesh demister is low in mechanical strength, easy to break, block and wax deposit, the pressure drop can be gradually increased along with the increase of the operation time, the separation efficiency is continuously reduced, meanwhile, the main installation mode is horizontal installation, and due to the fact that the gas speed is too fast, liquid in the gas phase is entrained to exceed the processing capacity of the wire mesh, and secondary entrainment is serious. And when the particle size of liquid drops is small and the gas speed is low, the separation effect is obviously reduced by adopting the vane demister. The baffle plate and the rotational flow plate demister utilize the principle of gravity separation, airflow flows longitudinally, liquid drops break away from gas phase under the action of gravity, the separation efficiency of the baffle plate and the rotational flow plate demister is lower than that of a wire mesh demister, and particularly, the separation efficiency of a system is lower under the condition of treating small liquid drops in a gas-liquid mixture.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be, provide a high-efficient coalescence-separation defroster, can overcome in the feeding that the liquid drop is little, the liquid phase is big, the gas-liquid separation inefficiency that the gas velocity height caused.

The purpose of the utility model is achieved through the following technical measures:

a high-efficiency coalescence-separation demister is connected with a gas phase outlet of a gas-liquid separator and comprises a drainage chamber, a liquid drop coalescence element, a separation element, a downcomer and a liquid phase collecting tank;

the drainage chamber is arranged at the gas-phase outlet of the gas-liquid separator and comprises a drainage chamber main body and an oblique guide plate; the drainage chamber main body is formed by enclosing an equipment cylinder, a front end plate, a rear end plate and a bottom plate together; the oblique guide plate is arranged on the front end plate in the drainage chamber main body and extends towards the rear end plate in an oblique and downward manner;

the droplet coalescence element, the separation element arrangement and the support device are arranged outside the front end plate of the drainage chamber; the separation element is a baffle plate blade, and an arc hook is arranged at the bent part of the baffle plate blade and used for separating large liquid drops; the liquid drop coalescence element and the separation element are both vertically arranged, a support plate is arranged at the lower part of the separation element, a plurality of rows of small holes are uniformly distributed on the support plate, and a liquid phase collecting tank is arranged below the small holes;

the downcomer means is located below the mid-portion of the drainage chamber floor and at the bottom of the liquid phase collection trough.

Further, the droplet coalescing element is a multi-layer stainless steel mesh.

Furthermore, the droplet coalescence element and the separation element are both detachable structures and are connected with the supporting device through bolts.

Further, the wire mesh diameter of the multilayer stainless steel wire mesh of the droplet coalescing element is 0.09-0.2 mm.

Further, the blade thickness of the separating element is 1 mm.

Further, the outer faces of the droplet coalescing and separation elements are surrounded and supported by four plates.

Further, the length, width and height of the demisting device can be determined according to the flow rate of the gas-liquid separator and the height of the gas-liquid interface.

Further, the efficient coalescing separation demister further comprises a support device for fixing the coalescing element and the separation element. The supporting device is arranged outside the front end plate of the drainage chamber.

Compared with the prior art, the beneficial effects of the utility model are that: the fine droplets in the gas are coalesced by collision with a wire mesh coalescing element to form large droplets, which are then separated by a separation element to achieve optimum demisting. Simultaneously, in order to guarantee the suitability of defogging structure in vapour and liquid separator, set up a drainage chamber behind the separator element, played buffering and settlement effect, simultaneously, carry out the water conservancy diversion to gas through the oblique guide plate in the drainage chamber to the gas after the defogging can be stable follow gas outlet outflow, simultaneously, has optimized the separation effect more.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is an enlarged view of a coalescing element and a separation element of the present invention.

In the figure, 1, a droplet coalescence element, 2, a separation element, 3, a shell, 4, a gas outlet, 5, a front end plate, 6, a bottom plate, 7, a rear end plate, 8, a downcomer, 9, an oblique deflector, 10 and a bracket.

Detailed Description

The present invention will be further explained with reference to the drawings, but the scope of the invention is not limited to the specific embodiments.

The utility model provides a high-efficient coalescence-separation defroster, specifically, as shown in fig. 1, 2 and 3, including drainage room, liquid drop coalescence element 1, separation element 2, downcomer 8 and liquid phase collecting vat to and be used for fixed liquid drop coalescence element 1 and separation element 2's strutting arrangement. The drainage chamber is arranged at a gas phase outlet of the gas-liquid separator and is defined by an equipment cylinder, a front end plate 5, a rear end plate 7 and a bottom plate 6; an oblique guide plate 9 is arranged on the front end plate 5 in the drainage chamber, and the oblique guide plate 9 extends towards the rear end plate 7 in an oblique mode; outside the front end plate 5 of the drainage chamber, a droplet coalescing element 1 and a separation element 2 are arranged, as well as a support means; a downcomer 8 is arranged in the middle of the drainage chamber bottom plate 6; the droplet coalescing element 1 and the separation element 2 are arranged vertically.

The separation element 2 is a baffle plate blade, and an arc hook is arranged at the bent part of the baffle plate blade and used for separating large liquid drops; the droplet coalescing element 1 and the separating element 2 are both arranged vertically, a support plate is provided at the lower part of the separating element 2, the support plate is provided with a plurality of rows of evenly distributed pores, and a liquid phase collecting tank is provided below the pores. The downcomer 8 is also provided with a liquid phase collection trough bottom.

The utility model discloses the coalescence element that sets up, when gaseous and droplet mix entering silk screen defogging element, droplet in the gas passes through the collision effect with the silk screen, and the droplet coalescence forms great liquid drop, has guaranteed the best separation effect.

For further strengthening the separation effect, the utility model discloses set up separating element 2 at droplet coalescence element 1 rear end, separating element 2 is baffling board vane type structure, and when the liquid droplet granule mixture that gas and coalescence formed loaded into baffling board blade separation runner, it changes to be forced to carry out the flow direction many times, and the transform runner that the gas that density is lower can be easy, and the higher liquid droplet of density bumps with the blade surface because the momentum effect. After multiple times of collision and cyclone coalescence, under the action of surface tension, the liquid drops are gathered into larger particles, and other liquid drops are absorbed to impact the blades of the baffle plate and are converted into flaky flow to form a liquid film. The liquid drops are separated from the air flow, then flow to the small holes at the bottom of the baffle plate blades through the vertical direction of the baffle plate blade flow channel and the air flow under the action of gravity, enter the liquid phase collecting tank, and are discharged to the bottom of the container through the downcomer 8, so that secondary entrainment and flooding are avoided.

The drainage chamber arranged behind the separation element 2 plays a role in buffering and sedimentation; meanwhile, the inclined guide plate 9 is arranged in the drainage chamber, and the gas is guided through the inclined guide plate 9, so that the demisted gas can stably flow out of the gas outlet 4, and the separation effect is optimized.

Claims (6)

1. The utility model provides a high-efficient coalescence defogging device, connects in vapour and liquid separator gas phase outlet, its characterized in that: comprises a drainage chamber, a droplet coalescence element, a separation element, a downcomer and a liquid phase collecting tank;

the drainage chamber is arranged at the gas-phase outlet of the gas-liquid separator and comprises a drainage chamber main body and an oblique guide plate; the drainage chamber main body is formed by enclosing an equipment cylinder, a front end plate, a rear end plate and a bottom plate together; the oblique guide plate is arranged on the front end plate in the drainage chamber main body and extends towards the rear end plate in an oblique and downward manner;

the droplet coalescence element, the separation element arrangement and the support device are arranged outside the front end plate of the drainage chamber; the separation element is a baffle plate blade, and an arc hook is arranged at the bent part of the baffle plate blade and used for separating large liquid drops; the liquid drop coalescence element and the separation element are both vertically arranged, a support plate is arranged at the lower part of the separation element, a plurality of rows of small holes are uniformly distributed on the support plate, and a liquid phase collecting tank is arranged below the small holes;

the downcomer means is located below the mid-portion of the drainage chamber floor and at the bottom of the liquid phase collection trough.

2. The efficient coalescing demisting apparatus according to claim 1, wherein: the droplet coalescing element is a multi-layer stainless steel mesh.

3. The efficient coalescing demisting apparatus according to claim 1, wherein: the droplet coalescence element and the separation element are both detachable structures and are connected with the supporting device by bolts.

4. The efficient coalescing demisting apparatus according to claim 2, wherein: the wire mesh diameter of the multilayer stainless steel wire mesh of the droplet coalescence element is 0.09-0.2 mm.

5. The efficient coalescing demisting apparatus according to claim 1, wherein: the outer faces of the droplet coalescing and separation elements are surrounded and supported by four plates.

6. The efficient coalescing demisting apparatus according to claim 1, wherein: the efficient coalescence-separation demister also comprises a supporting device for fixing the coalescence element and the separation element.

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